Molecular Breeding Strategies for Genetic Improvement in Rice (Oryza sativa L.)

2019 ◽  
pp. 317-341
Author(s):  
Ritu Mahajan ◽  
Nisha Kapoor
Keyword(s):  
Oryza Sativa ◽  
Genetic Improvement ◽  
Molecular Breeding ◽  
Oryza Sativa L ◽  
Breeding Strategies

scholarly journals Dynamic Transcriptome Analysis of Anther Response to Heat Stress during Anthesis in Thermotolerant Rice (Oryza sativa L.)

2020 ◽  
Vol 21 (3) ◽  
pp. 1155 ◽  
Author(s):  
Gang Liu ◽  
Zhongping Zha ◽  
Haiya Cai ◽  
Dandan Qin ◽  
Haitao Jia ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Molecular Breeding ◽  
Grain Quality ◽  
Oryza Sativa L ◽  
Core Gene ◽  
Heat Treatments ◽  
Stress Factors ◽  
Yield Losses ◽  
Main Gene ◽  
Heat Response

High temperature at anthesis is one of the most serious stress factors for rice (Oryza sativa L.) production, causing irreversible yield losses and reduces grain quality. Illustration of thermotolerance mechanism is of great importance to accelerate rice breeding aimed at thermotolerance improvement. Here, we identified a new thermotolerant germplasm, SDWG005. Microscopical analysis found that stable anther structure of SDWG005 under stress may contribute to its thermotolerance. Dynamic transcriptomic analysis totally identified 3559 differentially expressed genes (DEGs) in SDWG005 anthers at anthesis under heat treatments, including 477, 869, 2335, and 2210 for 1, 2, 6, and 12 h, respectively; however, only 131 were regulated across all four-time-points. The DEGs were divided into nine clusters according to their expressions in these heat treatments. Further analysis indicated that some main gene categories involved in heat-response of SDWG005 anthers, such as transcription factors, nucleic acid and protein metabolisms related genes, etc. Comparison with previous studies indicates that a core gene-set may exist for thermotolerance mechanism. Expression and polymorphic analysis of agmatine-coumarin-acyltransferase gene OsACT in different accessions suggested that it may involve in SDWG005 thermotolerance. This study improves our understanding of thermotolerance mechanisms in rice anthers during anthesis, and also lays foundation for breeding thermotolerant varieties via molecular breeding.

Genetic Improvement of Rice (Oryza sativa L.)

2017 ◽  
pp. 111-127 ◽  
Author(s):  
Kshirod K. Jena ◽  
Eero A. J. Nissila
Keyword(s):  
Oryza Sativa ◽  
Genetic Improvement ◽  
Oryza Sativa L

Development and application of a set of breeder-friendly SNP markers for genetic analyses and molecular breeding of rice (Oryza sativa L.)

2011 ◽  
Vol 123 (6) ◽  
pp. 869-879 ◽  
Author(s):  
Haodong Chen ◽  
Hang He ◽  
Yanjiao Zou ◽  
Wei Chen ◽  
Renbo Yu ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Molecular Breeding ◽  
Oryza Sativa L ◽  
Snp Markers ◽  
Genetic Analyses

Keragaan Morfologi dan Kandungan Antosianin Padi Beras Merah (Oryza sativa L.) di Kecamatan Munte dan Kecamatan Payung, Kabupaten Karo

1970 ◽  
Vol 5 (3) ◽  
pp. 391-403
Author(s):  
Wiwik Winarti ◽  
Eva Sartini Bayu ◽  
Revandy Iskandar Damanik
Keyword(s):  
Oryza Sativa ◽  
Oryza Sativa L ◽  
International Rice Research Institute ◽  
Research Institute

Keragaan morfologi dan kandungan antosianin padi beras merah (Oryza sativa L.) pada Kecamatan Munte dan Kecamatan Payung di Kabupaten Karo. Penelitian ini bertujuan untuk mendapatkan informasi morfologi dan kandungan antosianin padi beras merah (Oryza sativa L.). Penelitian ini dimulai dari Juni 2017dan selesai pada Januari 2018 di kecamatan Munte dan Kecamatan Payung Kabupaten Karo.Metode survei deskriptif menggunakan panduan International Rice Research Institute (IRRI). Teknik penentuan lokasi secara sengaja dan pengamblan sampel secara kebetulan.Uji kandungan antosianin menggunakan metode analitik dengan menghomogenkan sampel. Hasil eksplorasi didapatkan 72 genotipe yang dibagi menjadi tiga lokasi lahan. Berdasaran uji kandungan antosianin didapatkan lahan A memiliki kandungan tertinggi yaitu 0,5 mg/100 g dan terendah yaitu lahan B 0,08 mg/100 g.

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